ractive/src/virtualdom/items/Component/initialise/createBindings.js

Next-generation DOM manipulation

import createComponentBinding from 'shared/createComponentBinding';

export default function createInitialComponentBindings ( component, toBind ) {
	toBind.forEach( function createInitialComponentBinding ( pair ) {
		var childValue, parentValue;

		createComponentBinding( component, component.root, pair.parentKeypath, pair.childKeypath );

		childValue = component.instance.viewmodel.get( pair.childKeypath );
		parentValue = component.root.viewmodel.get( pair.parentKeypath );

		if ( childValue !== undefined && parentValue === undefined ) {
			component.root.viewmodel.set( pair.parentKeypath, childValue );
		}
	});
}